这是一个代码片段。
itemList = new List(skin, "ariel.32.white");
String[] tmpInv = new String[b+1];
tmpInv[0] = "<Empty>";
a++;
for (Entry<String, String> entry : inventoryItems.entrySet()) {
tmpInv[a] = entry.getKey();
a++;
//String key = entry.getKey();
//Object value = entry.getValue();
// ...
}
Arrays.sort(tmpInv);
itemList.setItems(tmpInv);
inventoryPane = new ScrollPane(itemList, skin);
这是我得到的,并且工作正常。我想在每个项目的前面添加描述性图标,但似乎无法使其正常工作。添加它们之后,我还需要一些方法来获取所选内容的名称。目前我使用
itemlist.getSelectedIndex();
最佳答案
据我所知,您不能使用列表窗口小部件添加图像或表格或除文本以外的任何内容。但是,您可以制作表格并将背景Drawable更改为新的Texture,该纹理可以在发生某些事件(例如mouseMove事件)时模拟列表的效果。然后,您可以将该表添加到可以处理滚动事件的ScrollPane中。
这将需要一些编码,但是这是我为您准备的一个工作示例:
package <some package>;
import com.badlogic.gdx.Game;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.scenes.scene2d.Event;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Image;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.ScrollPane;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
import com.badlogic.gdx.scenes.scene2d.utils.FocusListener;
import com.badlogic.gdx.scenes.scene2d.utils.TextureRegionDrawable;
public class ScrollScreenTest implements Screen{
Game game;
ScrollPane scrollpane;
Skin skin;
Stage stage;
Table container, table1, table2, table3;
Texture texture1, texture2, texture3;
public ScrollScreenTest(Game game){
this.game = game;
}
@Override
public void render(float delta) {
Gdx.gl.glClearColor(0, 0, 0, 1); //sets up the clear color (background color) of the screen.
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); //instructs openGL to actually clear the screen to the newly set clear color.
stage.draw();
stage.act(delta);
}
@Override
public void resize(int width, int height) {
}
@Override
public void show() {
// setup skin
skin = new Skin(Gdx.files.internal("data/uiskin.json"));
texture1 = new Texture(Gdx.files.internal("iron_axe.png"));
texture2 = new Texture(Gdx.files.internal("iron_dagger.png"));
texture3 = new Texture(Gdx.files.internal("iron_sword.png"));
// table that holds the scroll pane
container = new Table();
container.setWidth(320f);
container.setHeight(300f);
// tables that hold the data you want to display
table1 = new Table(skin);
table1.add(new Image(texture1)).expandY().fillY();
table1.add(new Label("", skin)).width(10f).expandY().fillY();// a spacer
table1.add(new Label("Look at this axe I stole!", skin)).expandY().fillY();
table2 = new Table(skin);
table2.add(new Image(texture2)).expandY().fillY();
table2.add(new Label("", skin)).width(10f).expandY().fillY();// a spacer
table2.add(new Label("So dagger, much pointy.", skin)).expandY().fillY();
table3 = new Table(skin);
table3.add(new Image(texture3)).expandY().fillY();
table3.add(new Label("", skin)).width(10f).expandY().fillY();// a spacer
table3.add(new Label("Valyrian steel..", skin)).expandY().fillY();
//inner table that is used as a makeshift list.
Table innerContainer = new Table();
innerContainer.add(table1).expand().fill();
innerContainer.row();
innerContainer.add(table2).expand().fill();
innerContainer.row();
innerContainer.add(table3).expand().fill();
// create the scrollpane
scrollpane = new ScrollPane(innerContainer);
//add the scroll pane to the container
container.add(scrollpane).fill().expand();
// setup stage
stage = new Stage();
// add container to the stage
stage.addActor(container);
// setup input processor (gets clicks and stuff)
Gdx.input.setInputProcessor(stage);
// setup a listener for the tables with out data
table1.addListener(new FocusListener(){
@Override
public boolean handle(Event event){
if (event.toString().equals("mouseMoved")){
table1.background(new TextureRegionDrawable(new TextureRegion(new Texture("gray.png"))));
return false;
}
else if(event.toString().equals("exit")){
//table1.setBackground(null);
//table1.background("");
table1.setBackground(null, false);
return false;
}
return true;
}
});
table2.addListener(new FocusListener(){
@Override
public boolean handle(Event event){
if (event.toString().equals("mouseMoved")){
table2.background(new TextureRegionDrawable(new TextureRegion(new Texture("gray.png"))));
return false;
}
else if(event.toString().equals("exit")){
//table1.setBackground(null);
//table1.background("");
table2.setBackground(null, false);
return false;
}
return true;
}
});
table3.addListener(new FocusListener(){
@Override
public boolean handle(Event event){
if (event.toString().equals("mouseMoved")){
table3.background(new TextureRegionDrawable(new TextureRegion(new Texture("gray.png"))));
return false;
}
else if(event.toString().equals("exit")){
//table1.setBackground(null);
//table1.background("");
table3.setBackground(null, false);
return false;
}
return true;
}
});
}
@Override
public void hide() {
}
@Override
public void pause() {
}
@Override
public void resume() {
}
@Override
public void dispose() {
}
}
关于image - 使用libgdx,如何将文本和图像同时添加到ScrollPane?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24480193/